Carroll McWilliams (Mac) Harmon, MD, PhD


Carroll M. Harmon, MD, PhD is the John E. Fisher Professor of Surgery and the Division Chief of Pediatric Surgery in the Department of Surgery at the Jacobs School of Medicine and Biomedical Sciences at the University at Buffalo, Program Director of the Pediatric Surgery Fellowship Program, Surgeon in Chief and Medical Director of Pediatric General & Thoracic Surgery at Oishei Children’s Hospital, Chief of Surgery for Kaleida Health, and Director of the Pediatric Surgery Research Laboratory.

Dr. Harmon’s research interests include pediatric obesity, both clinical as well as at a basic science. This includes long-term outcomes in adolescent bariatric surgery.  He also has a career long commitment to promoting the development and application of advanced neonatal and pediatric minimally invasive endosurgery.

Dr. Harmon is a past president of the International Pediatric Endosurgery Group and a member of the American Pediatric Surgical Association, American College of Surgeons, American Academy of Pediatrics,  Society of American Gastrointestinal Endoscopic Surgeons, Central Surgical Association, The Obesity Society, Society for Metabolic and Bariatric Surgery,  American Society of Parenteral and Enteral Nutrition, and Children’s Hospital Association Surgeon-in-Chief Forum.

Dr. Harmon received his BS in Biology at the University of Alabama and has Medical and Philosophy doctorates and training in General Surgery from Vanderbilt University.  He is board certified in adult and pediatric general and thoracic surgery.

Kaveh Vali, MD, FACS


Kaveh Vali, MD is an attending pediatric surgeon at Oishei Children’s Hospital, Associate Professor of Surgery at the Jacobs School of Medicine and Biomedical Sciences at the University at Buffalo and Assistant Program Director of the Pediatric Fellowship Program.  Dr. Vali has been an attending at Oishei Children’s Hospital since finishing his training in 2011.   He has been on multiple committees and is a devoted educator to the surgical residents and fellows.

Dr. Vali’s interests include minimally invasive pediatric surgery, as well as pediatric gastro-intestinal challenges such as short bowel syndrome and colo-rectal disorders.

He attended medical school at McGill University and completed his general surgery training at the University of California San Francisco. He continued his training and completed his Pediatric Surgery Fellowship at the University of Montreal. He is board certified in both adult general surgery and pediatric general surgery.

Dr. Vali is a fellow of the American College of Surgeons and a fellow of the American Academy of Pediatrics.